Windmill



(No Model.) 2 Sheets-Sheet 1.

W. 0. JA-GOB'.

Windmill. I No. 234,580. Patented Nov. 16,1880} Fig.1.

Win e/sd'es N- PETERS. PNOT-LITHOGRAPHER, WASMINGYON D C,

(No Model.) 2 Sheets-Sheet 2..

' W. C. J A C 0 B.

Windmill.

No. 234,580. Patented Nov. 16', 1880.-

Ilwrrnn STATES WILLIAM G. JACOB,

PATENT OFFICE.

OF DALLAS, IOWA.

WINDMILL.

SPECIFICATION forming part of Letters Patent No. 234,580, dated November 16, 1880.

Application filed July '24, 1880. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM G. JACOB, of Dallas, in the county of Marion and State of Iowa, have invented certain new and useful Improvements in Vindmills; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a plan or top view of my improved windmill. Fig. 2 is a vertical section laid through the broken line 0000 in Fig. l, and Fig. 3 is a perspective view.

Similar letters of reference indicate corresponding parts in all the figures.

My invention contemplates improvements in vertical windmills, &c.; and it consists of a revolving frame carrying vanes hinged or pivoted therein, with check ropes or chains, and adapted to close when in the wind and to open when out of the wind, substantially as hereinafter more fully set forth.

In the accompanying drawings, A marks an upper, and A a lower, head, suitably secured together, which constitute the frame carrying the vanes, and which said heads are journaled upon a central shaft.

B B are the vanes, preferably oblong or rectangular in form, and hingedor pivoted at their upper and lower ends, respectively, to the upper and lower heads in sections of two or more, each section of two or more vanes or wings being arranged radially with relation to the central shaft, and with their adjacent edges adapted to meet and form, when presented to the wind, a continuous unbroken surface to catch the full force of the wind, which drives or revolves the wheel. Rubber cushions or stops a a, in practice, check the closing action of the individual wings or vanes, while their opening action is checked by ropes or chains 1). These vanes or wings may, one or more of each section, be presented to the action of the wind, or all of each section, according to the amount of speed required. By increasing the number of vanes of each or of one or more sections, the power of the wheel or mill can be proportionately increased, and its driving capacity be correspondingly augmented.

C O are shutters fastened to and closing one side of a four-sided frame or pen inclosing the vane-frame and vanes. The shutters are designed to shield and break the great force of the wind, during a storm, with relation to the vanes.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- In a horizontal windmill, the combination, with the radial arms A A, of the pivoted wings or vanes B B, arranged in pairs between said arms, and each pair flexibly connected to each other and to the central shaft by cords or chains b, as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

WILLIAM C. JACOB. Witnesses:

JOHN M. JoNEs, O. E. NORRIS. 

